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(.NET Core C#) Download and Trust the DigiCert Global Root CADemonstrates how to download a root certificate and trust it. For more information, see https://www.digicert.com/digicert-root-certificates.htm
// This requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. // In this example, the URLs for the DigiCert root CA certs are available at this web page: // https://www.digicert.com/digicert-root-certificates.htm // This example downloads the "DigiCert Global Root G3" // Valid until: 15/Jan/2038 // Serial #: 05:55:56:BC:F2:5E:A4:35:35:C3:A4:0F:D5:AB:45:72 // Thumbprint: 7E04DE896A3E666D00E687D33FFAD93BE83D349E string certUrl = "https://dl.cacerts.digicert.com/DigiCertGlobalRootG3.crt"; Chilkat.Http http = new Chilkat.Http(); Chilkat.BinData bdCert = new Chilkat.BinData(); bool success = http.DownloadBd(certUrl,bdCert); if (success == false) { Debug.WriteLine(http.LastErrorText); return; } // Load it into a Chilkat cert object. Chilkat.Cert cert = new Chilkat.Cert(); success = cert.LoadFromBd(bdCert); if (success == false) { Debug.WriteLine(cert.LastErrorText); return; } // Examine the common name,serial, and thumbprint: Debug.WriteLine("CN: " + cert.SubjectCN); Debug.WriteLine("Serial: " + cert.SerialNumber); Debug.WriteLine("Thumbprint: " + cert.Sha1Thumbprint); // Output from the above: // CN: DigiCert Global Root G3 // Serial: 055556BCF25EA43535C3A40FD5AB4572 // Thumbprint: 7E04DE896A3E666D00E687D33FFAD93BE83D349E // If desired, the certificate can be saved to a local file so it does not need // to be downloaded from the website every time. string certPath = "qa_data/certs/DigiCertGlobalRootG3.crt"; success = bdCert.WriteFile(certPath); // To load the cert from a file... success = cert.LoadFromFile(certPath); // Do the following to add the cert to the collection of trusted roots // for this application. (Note: The trust is not persisted. Each time the // application runs, it should load the cert (from whatever source, whether it is // a file, a database,etc.) and do the following: Chilkat.TrustedRoots troots = new Chilkat.TrustedRoots(); troots.AddCert(cert); troots.Activate(); Debug.WriteLine(cert.SubjectCN + " is now trusted for this run of this application."); |
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